From: Oleksij Rempel Date: Sun, 22 Mar 2015 19:30:01 +0100 Subject: [PATCH] ath9k: use REG_RMW and rmw buffer in ath9k_hw_4k_set_gain it is possible to reduce time needed for this function by rplacing REG_WRITE with REG_RMW (plus dummy 0) and putt all commands in same buffer. Signed-off-by: Oleksij Rempel Signed-off-by: Kalle Valo --- --- a/drivers/net/wireless/ath/ath9k/eeprom_4k.c +++ b/drivers/net/wireless/ath/ath9k/eeprom_4k.c @@ -772,15 +772,14 @@ static void ath9k_hw_4k_set_gain(struct struct ar5416_eeprom_4k *eep, u8 txRxAttenLocal) { - REG_WRITE(ah, AR_PHY_SWITCH_CHAIN_0, - pModal->antCtrlChain[0]); - - REG_WRITE(ah, AR_PHY_TIMING_CTRL4(0), - (REG_READ(ah, AR_PHY_TIMING_CTRL4(0)) & - ~(AR_PHY_TIMING_CTRL4_IQCORR_Q_Q_COFF | - AR_PHY_TIMING_CTRL4_IQCORR_Q_I_COFF)) | - SM(pModal->iqCalICh[0], AR_PHY_TIMING_CTRL4_IQCORR_Q_I_COFF) | - SM(pModal->iqCalQCh[0], AR_PHY_TIMING_CTRL4_IQCORR_Q_Q_COFF)); + ENABLE_REG_RMW_BUFFER(ah); + REG_RMW(ah, AR_PHY_SWITCH_CHAIN_0, + pModal->antCtrlChain[0], 0); + + REG_RMW(ah, AR_PHY_TIMING_CTRL4(0), + SM(pModal->iqCalICh[0], AR_PHY_TIMING_CTRL4_IQCORR_Q_I_COFF) | + SM(pModal->iqCalQCh[0], AR_PHY_TIMING_CTRL4_IQCORR_Q_Q_COFF), + AR_PHY_TIMING_CTRL4_IQCORR_Q_Q_COFF | AR_PHY_TIMING_CTRL4_IQCORR_Q_I_COFF); if ((eep->baseEepHeader.version & AR5416_EEP_VER_MINOR_MASK) >= AR5416_EEP_MINOR_VER_3) { @@ -819,6 +818,7 @@ static void ath9k_hw_4k_set_gain(struct AR9280_PHY_RXGAIN_TXRX_ATTEN, txRxAttenLocal); REG_RMW_FIELD(ah, AR_PHY_RXGAIN + 0x1000, AR9280_PHY_RXGAIN_TXRX_MARGIN, pModal->rxTxMarginCh[0]); + REG_RMW_BUFFER_FLUSH(ah); } /*